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Video processor architecture and method for frame rate converstion

a video processor and frame rate technology, applied in the field of video processing, can solve the problems of inability to convert between frame rates, inability to obtain existing video at the higher frame rate, and inability to meet the needs of real-time video reproduction, etc., and achieve the effect of reducing latency

Inactive Publication Date: 2008-06-26
AVAGO TECH INT SALES PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]Exemplary of embodiments of the present invention, video attribute data is determined at a video processor, upstream of a frame rate converter (FRC). This attribute data is formatted and passed along a channel to the FRC, for use by the FRC. In this way, the FRC may rely on attribute data obtained by the video processor, and may avoid having to re-analyze video frames. Conveniently, attribute data may be available with received frames and thereby quickly acted upon by the FRC, reducing latency.

Problems solved by technology

Conversion between frame rates has created challenges.
Existing video, however, is not readily available at the higher frame rate.
Such conversion, in real time presents numerous challenges, arising at least in part from the requirements to analyse incoming video in order to form higher rate video.

Method used

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  • Video processor architecture and method for frame rate converstion

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Embodiment Construction

[0023]FIG. 1 is a schematic block diagram of video receiver 10, exemplary of an embodiment of the present invention. As illustrated video receiver 10 includes a video decoder 12, a video processor 14, a frame rate converter (FRC) 16, and a display interface 18. Video receiver 10 may take the form of a set top box, satellite receiver, terrestrial broadcast receiver, media player (e.g. DVD player), media receiver, or the like. Receiver 10 (or portions thereof) may optionally be integrated in a display device, such as a flat panel television, computer monitor, portable television, hand-held device (such as a personal digital assistant, mobile telephone, video player), or the like.

[0024]Receiver 10 may be formed in custom hardware, or a combination of custom hardware and general purpose computing hardware under software control.

[0025]As will become apparent, video receiver 10 receives video, in the form of a video broadcast, digital video stream or the like. Decoder 12, in turn decodes ...

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Abstract

A video processor, upstream of a frame rate converter determines video attribute data. This attribute data is formatted and passed along a channel to the frame rate converter. The frame rate converter extracts the attribute data from the channel for use in frame rate conversion. The frame rate converter may thus rely on attribute data obtained by the video processor, and need not re-analyze video frames.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is related to U.S. patent application Ser. No. ______ entitled “LOW LATENCY CADENCE DETECTION FOR FRAME RATE CONVERSION”, filed concurrently herewith, the contents of which are hereby incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates generally to video processing, and more particularly to video devices capable of frame rate conversion.BACKGROUND OF THE INVENTION[0003]Moving picture video is typically recorded or encoded at a pre-determined frame rate. For example, cinema films are typically recorded at a fixed rate of 24 frames per second (fps). Video as broadcast for television in accordance with the NTSC standard, on the other hand, is encoded at 30 fps. Video broadcast in accordance with European PAL or SECAM standards is encoded at 25 fps.[0004]Conversion between frame rates has created challenges. One common technique of converting frame rates involves dropping or repeating fr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N11/22
CPCH04N7/0112H04N7/0137H04N7/0127
Inventor DOSWALD, DANIEL
Owner AVAGO TECH INT SALES PTE LTD
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